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<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
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<body>
  <script>

    let str = "hello world"
    // 按数组书写
    let [a, b, ...reset] = str
    console.log(a, b, reset)
  </script>
</body>

</html>